-2+r/9=-1

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Solution for -2+r/9=-1 equation: 



-2+r/9=-1

We move all terms to the left:

-2+r/9-(-1)=0

We add all the numbers together, and all the variables

r/9-1=0

We multiply all the terms by the denominator


r-1*9=0

We add all the numbers together, and all the variables

r-9=0

We move all terms containing r to the left, all other terms to the right

r=9

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